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1)  MRDV
粗缩病
1.
Analysis on Disease and Predisposing Factor of the MRDV;
玉米粗缩病发病影响因素分析
2.
Resistance Identification and Analysis of the Maize Germplasm to MRDV
玉米自交系抗粗缩病的鉴定与分析
3.
MRDV is a worldwide disease caused by maize rough dwarf virus.
玉米粗缩病是由MRDV(Maize Rough Dwarf Virus,玉米粗缩病毒)引起的重要病害之一。
2)  rough dwarf disease
粗缩病
1.
Occurrence of rough dwarf disease of maize closely associated with growth stage of maize during the disease infection.
玉米粗缩病的发生与病毒侵染时玉米植株的生育期关系密切。
3)  rough dwarf virus
粗缩病毒
1.
The mainly maize virus diseases in Shaanxi were identified as maize dwarf mosaic virus strain B(MDMV B),maize rough dwarf virus(MRDV)and barley yellow dwarf virus(BYDV).
研究结果表明:陕西玉米病毒病毒原主要有玉米矮花叶病毒B 株系(M DMV-B)、玉米粗缩病毒(M RDV)和大麦黄矮病毒(BYDV)。
4)  MRDV
玉米粗缩病
1.
MRDV Zibo area analysis and a high incidence of IPM Research
淄博地区玉米粗缩病高发原因分析及综防技术研究
2.
Maize is one of the most important crops in China, and both maize rough dwarf virus (MRDV) and gray leaf spot (GLS) are two sever disease limiting yeild production annually.
玉米粗缩病和灰斑病是影响产量高低的重要因素,培育和种植抗病品种是防治病害的经济有效途径,而抗病育种的成效取决于对抗源和抗病遗传规律的认识。
5)  maize rough dwarf disease
玉米粗缩病
1.
Advance in researches on rice black-streaked dwarf disease and maize rough dwarf disease in China;
我国水稻黑条矮缩病和玉米粗缩病研究进展
2.
Identification of the disease resistance of maize cultivars to maize rough dwarf disease and studies on the relationships between disease indices and yield loss were carried out in Quyang,Hebei Province,where the disease has been seriously occurring in recent years.
对河北省26个主推玉米品种进行抗玉米粗缩病性鉴定,并对其发病率及病情指数与产量损失率的相关性进行了研究。
3.
Maize rough dwarf disease caused by Rice black-streaked dwarf virus(RBSDV) is one of the most important diseases on maize production in North China.
通过对农大108、郑单958和德玉18等3个玉米品种感染玉米粗缩病后株高与单株产量的测定,按病株相对健株株高的比值推导出了玉米粗缩病严重度分级标准,即病株相对健株株高的比依次为1,4/5,2/3,1/2,1/3,其对应病株的病级分别是0,1,2,3,4级;明确了0~4级玉米粗缩病病情严重度分级标准与产量损失的关系,即0,1,2,3,4级病株,产量损失率依次为0,25%,50%,75%和100%。
6)  maize rough dwarf virus
玉米粗缩病
1.
Epidemic factors and predictive models for the disease caused by maize rough dwarf virus;
玉米粗缩病的流行因素与预测模型
2.
Relationship between different sowing dates and the diseased plant rate of maize rough dwarf virus disease;
玉米播期与玉米粗缩病病株率的关系
3.
The occurrence law and the reasons were analyzed according to the symptom and the charac- teristics of maize rough dwarf virus.
针对玉米粗缩病的症状和危害特点,分析了其发生规律和流行原因,并从农业和化学防治两个方面提出了玉米粗缩病的综合防治方法。
补充资料:桃缩叶病的综合防治
    桃缩叶病在春季多雨低温的情况下最容易感病,以危害叶片为主,发病严重的也危害花嫩梢叶及幼果,不少桃园因忽视桃缩叶病的防治,导致4至5月大量落叶落果。
    桃缩叶病为真菌性病害,叶片受害后叶缘卷曲肿大,叶片变为红褐色,后期叶面生出灰白色粉状物,最后叶片变褐焦枯脱落,受害严重的可引起70%以上早期落叶,枯梢受害后呈灰绿色或黄色,节间短,略呈肿胀,其上叶片常丛生,受害严重的整枝枯死。花果受害后多畸形脱落。还危害油桃、李、杏、扁桃、蟠桃等核果类果树。
    桃缩叶病的病菌主要以厚壁芽殖孢子在桃芽鳞片上、树干树皮上过冬,到翌年春季,当桃芽膨大萌发时,芽孢子萌发,由芽管直接穿过桃叶表皮或气孔侵入,菌丝在叶表皮下快速蔓延,刺激叶片细胞大量分裂,引起叶片卷曲皱缩脱落。夏季高温期发病停止。当桃树萌芽期低温,连续阴雨湿度大,持续时间长,病害即会大发生;相反如果桃树萌芽开花期天气晴朗气温达到21℃以上,病害就不会大发生。
    预防桃缩叶病,可采取综合防治方法:1加强管理,一旦发病,于初见病叶时,可摘除病叶集中烧毁。发病较重的树,当叶片大量焦枯和脱落时,应及时补施肥料和水分,增强抗病能力和恢复树势。2桃缩叶病一旦发生,来势猛,药剂防治的关键是在桃树花芽膨大露红时,全园喷施一次4至5度的石硫合剂,或1:2:200的波尔多液,对消灭病原效果较好,每隔7天1次,连喷3至4次。或用10%双效灵水剂500倍液每隔IO天1次,连续3至4次。桃树生长季节喷施2次粉锈宁或50%硫悬浮剂,防治效果也很好。(来源:《中国花卉报》2003.10.23)
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